Lots of good stuff in this thread, but I'd like to emphasize seeing a therapist (not necessarily a doctor, who is probably a lot more trained in medical procedures than emotional well-being). From experience, there is something very powerful about working out your problems in relation to a person that cares about your well-being.

As for the stigma of therapy (which I think is thankfully starting to erode), don't worry about it. All a therapist is is someone you hire that is trained to help you see your life more clearly and really wants to help you. You can use reviews on Yelp or other review sites to find a good one.

Heck, if they can afford it or have insurance cover it, I think people that are already functioning okay can be even happier seeing a good therapist. It feels like adding another core to your CPU, adding more capacity for processing your life :)